Oldham iTrans, Руководство пользователя

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iTrans Fixed Point Single/Dual Gas Monitor Hardware Overview
(P/N: 77023554-1) iTrans User Manual 2-3
2.3. Display
The gas monitor has a 4-digit, 7-segment LED display for each of 2
channels. A dual-gas sensor and sample display are shown in
Figure 2-2.
Figure 2-2. The Display (Dual-Gas Monitor Shown)
2.4. Inputs – Intrusive and Non-Intrusive
The gas monitor can be configured using intrusive and non-intrusive
means. Both methods of configuration are accomplished through physical inputs
that are visible behind the glass panel of the gas monitor.
A set of four keys are used when intrusive programming is appropriate (i.e., when
the enclosure can be removed and when the keys can be manually pressed). These
keys are the mode, increment (+), decrement (-), and enter keys. Refer to
Figure 2-3.
For applications that require non-intrusive manipulation, two magnetically-
activated reed switches are used to accomplish programming without removing the
cover. A magnetic wand is positioned over the appropriate reed switch (above the
glass face plate) without the wand physically touching the reed switches. The
locations of the reed switches are shown in Figure 2-3.